Home / 102,215.47-140,997.56-66,429.32

Finding the Fourth Proportional to 102,215.47, 140,997.56 and 66,429.32

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Solution

The fourth proportional to 102,215.47, 140,997.56 and 66,429.32 is: 91,633.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,215.47 : 140,997.56 = 66,429.32 : x
  2. Step 2: Convert to fraction form
    102,215.47/140,997.56 = 66,429.32/x
  3. Step 3: Cross multiply
    102,215.47x = 140,997.56 × 66,429.32
  4. Step 4: Simplify right side
    102,215.47x = 9,366,371,368.99
  5. Step 5: Solve for x
    x = 9,366,371,368.99/102,215.47
  6. Step 6: Final answer
    x = 91,633.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.